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onsemi 1N5364B
- Part No.:
- 1N5364B
- Manufacturer:
- onsemi
- Category:
- Single Zener Diodes
- Package:
- T-18, Axial
- Datasheet:
-
1N5364B.pdf
- Description:
- DIODE ZENER 33V 5W AXIAL
- Quantity:
- Payment:
- Shipping:
Inventory:3,977
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Product details
Overview
1N5364B from onsemi is a 5 W axial-lead Zener diode with nominal zener voltage of 33 V, ±5% tolerance, maximum zener impedance of 40 Ω at 10 mA test current, and surge rating of 144 A at 8.3 ms. It operates across −65°C to +200°C and serves as a precision voltage reference or overvoltage clamp in DC power supply regulation circuits.
For engineers reviewing the 1N5364B datasheet, pinout, applications, or equivalent options, key selection criteria include its 33 V nominal breakdown voltage, 150 mA maximum DC zener current, 0.6 mA leakage current at 25.1 V, and compatibility with standard through-hole PCB layouts using CASE 017AA packaging.
Technical Context
The 1N5364B uses a silicon-oxide passivated junction for stable voltage regulation under varying thermal and load conditions. Its zener voltage is specified at IZT = 10 mA with tight ±5% tolerance and exhibits a positive temperature coefficient above 5 V, typical for 33 V devices.
It delivers 5 W steady-state power dissipation at TL = 25°C with 40 mW/°C derating above that temperature and features a junction-to-lead thermal resistance of 25 °C/W. The device supports non-repetitive surge currents up to 144 A (8.3 ms), validated per JEDEC standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 31.35–34.65 V @ IZT = 10 mA - defines regulated output voltage range under nominal bias |
| Max DC Zener Current (IZM) | 150 mA - maximum continuous current before exceeding 5 W power limit at nominal VZ |
| Zener Impedance (ZZT) | 40 Ω @ IZT = 10 mA - low dynamic resistance ensures stable regulation under load transients |
| Leakage Current (IR) | 0.6 mA @ VR = 25.1 V - confirms sharp knee and low off-state conduction below breakdown |
| Surge Current (IRM) | 144 A @ 8.3 ms - enables robust transient overvoltage protection without failure |
| Power Dissipation (PD) | 5 W @ TL = 25°C - sets thermal design boundary for lead-mounted heatsinking |
| Operating Temperature | −65°C to +200°C - supports industrial, automotive, and high-reliability environments |
Pinout & Package
1N5364B is housed in an axial-lead, transfer-molded plastic package (CASE 017AA) with cathode indicated by a band. Leads are corrosion-resistant and solderable per IPC-J-STD-001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward conduction terminal / Zener cathode reference ground | Connected to circuit ground or lower-potential node during reverse-bias regulation |
| Cathode | Zener breakdown terminal / regulated output node | Provides stable 33 V reference when reverse-biased; polarity band identifies this terminal |
Key Features
| Feature | Design Value |
|---|---|
| ESD robustness | Class 3 (>16 kV HBM) - eliminates need for external ESD protection in board-level designs |
| Tight voltage tolerance | ±5% at 33 V - reduces calibration overhead in precision reference applications |
| High surge capability | 144 A peak @ 8.3 ms - withstands lightning-induced or inductive-switching transients |
| Pb-free compliance | RoHS-compliant "G" suffix variant available - meets global environmental directives without performance trade-offs |
| Thermal stability | 25 °C/W θJL - enables predictable thermal management using standard lead-length mounting |
Applications
| DC Power Supply Regulation | Overvoltage Protection Clamp |
|---|---|
Use Scenario: Stabilizing unregulated 36–40 V DC rail in industrial control power modules. IC Role / Device Role / Timing Role: Zener diode operating in reverse breakdown to clamp output at 33 V ±5%. Use Value: Maintains downstream logic supply within safe operating limits despite input ripple and load variation. |
Use Scenario: Protecting microcontroller I/O pins from accidental 48 V bus coupling in factory automation systems. IC Role / Device Role / Timing Role: Fast-acting shunt clamp activated only during overvoltage events. Use Value: Limits transient voltage to ≤34.65 V, preventing latch-up or gate oxide damage without loading normal operation. |
| Reference Voltage Source | Current Source Biasing |
Use Scenario: Providing stable 33 V reference for analog-to-digital converter (ADC) reference buffers in data acquisition units. IC Role / Device Role / Timing Role: Precision voltage reference with low dynamic impedance (40 Ω). Use Value: Reduces ADC quantization error caused by reference drift under varying ambient temperatures. |
Use Scenario: Setting bias current for high-side N-channel MOSFET gate drivers in motor control inverters. IC Role / Device Role / Timing Role: Zener-based constant-current source via series resistor. Use Value: Ensures consistent gate drive strength across temperature, improving switching timing repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5364 | Same electrical specs but ±10% tolerance (vs. ±5% for 1N5364B); no "B" suffix denotes looser grading | Acceptable where cost sensitivity outweighs precision requirements | Select 1N5364B when regulation accuracy and low impedance are critical; choose 1N5364 only for non-critical clamping |
| BZX85C33 | 1.3 W rating, TO-204AA package, higher ZZT (100 Ω), lower IZM (70 mA) | Suitable for low-power signal-level regulation, not 5 W power rail clamping | Use BZX85C33 only in space-constrained or low-dissipation designs; 1N5364B remains preferred for ≥5 W applications |
Compared with 1N5364 and BZX85C33, the 1N5364B delivers tighter voltage tolerance, higher surge immunity, and full 5 W power handling-making it the optimal choice for industrial-grade power regulation where reliability and precision are non-negotiable.
Availability
1N5364B is available at Aetrix Electronics and suitable for DC power supply regulation, overvoltage protection clamping, and precision reference voltage generation requiring stable component supply across extended temperature ranges and high-surge environments.
Supply support for 1N5364B includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
onsemi (Semiconductor Components Industries, LLC) is a global semiconductor supplier focused on energy-efficient electronics for automotive, industrial, cloud, and IoT applications.
The 1N53 Series belongs to onsemi's Surmetic™ 40 Zener regulator family, engineered for high-reliability voltage reference and clamping in harsh-environment power systems.
FAQ
What is the nominal zener voltage and tolerance of the 1N5364B?
The 1N5364B has a nominal zener voltage of 33 V with a guaranteed tolerance of ±5%, corresponding to a minimum of 31.35 V and maximum of 34.65 V at IZT = 10 mA. This tight tolerance is confirmed in the onsemi datasheet Rev. 19 (July 2024) and applies specifically to the "B"-suffix variant, distinguishing it from looser-tolerance versions like the base 1N5364.
What is the maximum steady-state power dissipation for the 1N5364B?
The 1N5364B is rated for 5 W maximum steady-state power dissipation at a lead temperature (TL) of 25°C, with a derating factor of 40 mW/°C above that temperature. This rating assumes 3/8-inch lead length to heatsink and is validated per JEDEC test conditions in the official onsemi datasheet.
Does the 1N5364B have Pb-free packaging options?
Yes, the 1N5364B is available in Pb-free packaging, indicated by the "G" suffix (e.g., 1N5364BG). This complies with RoHS Directive 2011/65/EU and is documented in onsemi's ordering information and Pb-Free strategy reference manual SOLDERRM/D.
What is the zener impedance of the 1N5364B and why does it matter?
The 1N5364B has a maximum zener impedance (ZZT) of 40 Ω at IZT = 10 mA. This low dynamic resistance ensures minimal output voltage variation under changing load current-critical for maintaining regulation accuracy in power supply feedback loops and reference circuits.
How is polarity identified on the 1N5364B package?
Polarity on the 1N5364B is marked by a cathode band located near one end of the axial-lead plastic case (CASE 017AA). The banded end is the cathode; the opposite lead is the anode. This marking is standardized across the 1N53 Series and verified in the mechanical drawings on page 6 of the onsemi datasheet.
1N5364B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- T-18, Axial
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Voltage - Zener (Nom) (Vz):
- 33 V
- Tolerance:
- ±5%
- Power - Max:
- 5 W
- Impedance (Max) (Zzt):
- 10 Ohms
- Current - Reverse Leakage @ Vr:
- 500 nA @ 25.1 V
- Voltage - Forward (Vf) (Max) @ If:
- 1.2 V @ 1 A
- Operating Temperature:
- -65°C ~ 200°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- Axial
1N5364B FAQ
1.How can I place an order for 1N5364B through Aetrix?
Please submit a Request for Quotation (RFQ) for 1N5364B on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 1N5364B reliable?
The price and inventory of 1N5364B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 1N5364B is usually 5 days.
3.What payment methods are accepted for 1N5364B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 1N5364B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 1N5364B?
1N5364B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 1N5364B order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 1N5364B?
For technical support, including 1N5364B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 1N5364B requirements.
6.How does Aetrix verify that 1N5364B is sourced from the original manufacturer or authorized distributors?
All 1N5364B products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 1N5364B meets industry standards.
7.What is the process for return or replacement of 1N5364B?
All 1N5364B units undergo pre-shipment inspection (PSI). If there is an issue with 1N5364B, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 1N5364B part is unused and in its original packaging.
Return procedure for 1N5364B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
1N5364B Tags
-
MMBZ5240B-7-F
Diodes Incorporated
-
BZT52C5V6T-7
Diodes Incorporated
-
MMSZ5231B-7-F
Diodes Incorporated
-
BZT52C15-7-F
Diodes Incorporated
-
BZX84C3V3LT1G
onsemi
-
MMSZ5245BS-7-F
Diodes Incorporated
-
MMSZ4682T1G
onsemi
-
BZT52C15S-7-F
Diodes Incorporated
-
MM5Z5V1ST1G
onsemi
-
SMAJ4744A-TP
Micro Commercial Co
-
BZT52C3V6LP-7
Diodes Incorporated
-
SMAZ12-13-F
Diodes Incorporated
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